The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2020
Filed:
Oct. 11, 2016
Essilor International, Charenton-le-Pont, FR;
Melanie Heslouis, Charenton le Pont, FR;
Benjamin Rousseau, Charenton le Pont, FR;
Sebastien Fricker, Charenton le Pont, FR;
Essilor International, Charenton-le-Pont, FR;
Abstract
An ophthalmic progressive addition lens for an emmetropic and presbyopic wearer having a mean refractive power, PPO(α, β), a module of resulting astigmatism, ASR(α, β), an acuity loss value ACU(α, β), wherein the (α, β) functions are determined in as-worn conditions of the lens by the wearer, and a first acuity criterion, AcuityCriterion1 which fulfils following requirement: AcuityCriterion1≥435 D.deg, and wherein: AcuityCriterion1 is defined as a combination of PPO(α, β), ASR(α, β), ADD, and ACU(α, β).